Belt-lacing device



g w. CRAMER BELT LACING DEVICE Filed 0ct.50, 1924 Patented Aug. 30, 1927.

UNITED STATES PATENT- OFFICE.

WILLIAM CRAMER, OF S T. LOUIS, MISSOURI, .ASSIG'NOR BY MESN E ASSIGNMENTS, '10

ISIDOR M. JACOBS. v

BELT-LAGING nnvron.

Application filed October 30, 1924. Serial No. 746,763.

This invention relates to improvements in belt lacing devices of the type used to apply metallic belt lacings to power transmission belts for the purpose of securing the ends of said belts together, and particularly to a. device of the type mentioned which 1s provided with a cutting device for trimming the end port-ions of the belts to be acted on, and a pivot hammer for driving the metallic lacing members through the V belts and clinching said lacing members.

A belt fastening device of the type mentioned above is provided with a pivot blade havingan inclined face which is the result of tapering said blade to produce a cutting edge. This inclined face, prior to this invention, had the eifect of causing the blade to be moved laterally as it was forced through the belt which" was beingsevered whereby an irregular out was produced. To

eliminate any lateral movement of the blade forming a part of my improved belt lacing device, I employ a guide member which may be arranged immediately adjacent to said blade as itis forced through the belt, thus causing said blade to move in a true vertical line.

Another advantage ofmy improvedbelt lacing device over 'the belt lacing devices heretofore used resides in the fact that the pivoted hammer of said belt lacing device comprises a plurality of hammer members instead of a single hammer member. By so arranging the pivot hammer of my device the jnecessity for a tremendously heavy H blow to drive through the belt and clinch a great number of lacing members is eliminated, as only a portion of the total number of'lacing members are driven through the belt and clinched by. each blow and the blows therefore need not be so heavy as if all of said lacing members were clinched by each blow. c

lVith the foregoing and other objects in view, the invention comprises'the novel construction, combination andarrangement of parts hereinafter more specifically, described and illustrated :in'the accompanying drawings wherein is shownthe preferr'ed embodiment of the invention. However, t 1s to be understood that the Invention comprehe'nds changes, variations andmodifications which come within the scope of the claims hereunto appended. 1

Fig. I isa plan view of a belt lacing device made in accordance with my invention.

Fig. II is a longitudinal section through the device shown in Fig. I-

Fig. III is a transverse section through the device shown in Figs. I and II.

In the drawing A designates my improved belt lacing device which comprises an anvil B and staple holding'mechanism C. The anvil Bis preferably formed of comparatively heavy metal and is provided with a plurality of reinforcing ribs B which are intended to add durability to said anvil.

Mounted on the anvil B adjacent to one of its ends is the staple holding mechanism) C,

tinuous passageway is" formed which extends from end to end of {theslotted portion.- of said plate 1. Extended through the apertures referred to is an elongated pin 5, said pin being preferably provided with-a loop at one of its ends to provide a convenient means for withdrawingsaid pin from said apertures. r v

Arranged adjacent to the plate 1 of the staple holding-mechanism of my improved device is a hammer D which comprises a pair of independently movable hammer members 6 and 7, said members 6 and 7 being' pivotally mounted on a rod 8 which extends transversely of the anvil B. The hammer members 6and 7 each comprise a hub portion 9, a head portion 10 and a curved arm. 11 connecting the associated hub portion and head portion. 12" designated stop members which are formed integral with the hub portions of the hammer members 6 and 7, said stop members being so arranged that they will contact with the under side vof the top wall of'theanvil B when said members almost in contact with each other (Fig. I)..-

13 designates a coil spring, the opposite ends of which are attached to the members 6 and 7 to connect said members together.

1 Located adjacent to a side edge of the anvil B is the cutting device of'my improved belt lacing device, which comprises a blade 14 which is pivotally mounted on the transverse rod 8 by which the hammer members 6 and 7 are supported. The blade 14 is provided with an inclined face 15 which results from tapering said blade to provide it with a cutting edge. lGdesignates an L-shaped 1nember which is secured to the side of the-anvil B to provide a recess into which the blade 1a is moved when it is passed through a belt, said recess being approximately as wide as the thickness of the blade and the inner wall of said .recess functioning asa cutting edge which cooperates with the blade to sever the belt. JSupported in bearings 17 formed. integral with the rear wall 18' of the anvil B is a trans verse rod 19-, said rod being rotatablysup ported in said bearings. Fixed to the rod 19 one of its ends is a curved arm 20. The curved arm 20'is so positioned relative to the blade 1% that the'inside face of said blade contacts with the adjacent face of saidcurved arm, as shown clearly in Figs. I and III, and it is plainthat if the curved arm 20 were in the position in which itis shown by full lines in Fig; II it would act as a guiding member for said blade, which would prevent said blade from being accidentally moved inwardly. As already stated, the curved arm 20 is fixed-to the transverse rod 19, and said rodv is capable of rotating in the bearing 17, Consequently said curved arm 20 may be raised to the position in which it is shown by full linesin Fig. II, or said curved arm maybe moved clown- V wardly to the position in which it is shown by dotted lines in said view. The reason for employlng a curved arm which may be moved as described 18 to enable said arm to Also when the curved upper edge of the wall 18 of the anvil, as

shown in Fig. II.

In the use'of my improved 'belt lacing to be cut from said belt extends beyond the cuttingedge ofthe blade 1s and so that a side edge of said belt contacts with the inside face of the end wall 18 of the anvil B. Vfhen thebelt is positioned as described, the blade 14- is struck a hammerblowand said blade is driven through the belt to sever same. the bladelt is provided with an inclined face 15, and if some means were notpresent to prevent it, this inclined face acting against the belt through which it is being forced would have a tendency to move said I blade inwardly and thereby produce an irregular out. However, the curved arm 20 of my improved device will have been previously raised to its uprightv position and It will be remembered that will be so located relative to the blade 14: 1

that said blade will rub against it as it moves downwardly under the force of the hammer blow; It is therefore plain that lateral movement of the blade-l4 will be prevented, and as said blade moves ina true vertical line a square out "will be obtained. v

After the belt has been trimmed as described, the elongated ins is withdrawn from the apertures through which it extends and a staple is inserted into, each of the slots ofthe plate 1, or into asm'any slotsas .is necessary, depending on the width of the belt to be acted upon. The elongated pin is'thenagain inserted into the apertures in a manner to'lock said staples in said slots. vAn end-of the belt is then inserted betweenthe sharp ends'of the staples and the hammer members 6 and -7 are brought to positions where they rest upon said staples. After the parts have been thus positioned, one of the hammer members 6 or? will be struck a hammer blow which will drivethe sharpened ends of the staples located below said member into the belt and clinch same. will then be struck a blow which will drive the sharpened ends of the staples below that The other hammer member I member into the belt and clinch said ends I of said staples.

through the belt and clinched by each blow, a much lighter blow will beisufficient than if all of the staples were driven through the- It is plain'from this that r because a fewer number of staples are driven belt and'clinched by a single blow. After both ends of the belt have ibeenprovided' w h, st l s n t m se d s rib d; the.

staples at the opposite ends of said belt are connected together in the well known manner.

I claim:

1. A belt lacing device comprising an anvil, staple holding mechanism, and a pivoted hammer, said hammer comprising a plurality of independently movable hammer members.

2. A belt lacing device comprising an anvil, staple holding mechanism, and a pivoted hammer, said hammer comprising a plurality of independently movable hammer members, and fiexiblc means whereby said hammer members are connected together.

3. A belt lacing device comprising an anvil, staple holding mechanism, and a pivoted hammer, said hammer comprising a pair of independently movable hammer oted hammer, said hammer comprising a pair of independently movable hammer members, a coil spring whereby said hammer members are connected together, and stop members for limiting the rearward movement of said hammer members.

In testimony that I claim the foregoing I hereunto afiix my signature.

' .WILLIAM CRAMER. 

